/*
 * Copyright 2009 Original Author(s)
 * 
 * This file is part of Kommando
 * 
 * Kommando is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Kommando is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Kommando.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kommando.core.util;

/**
 * @author Peter De Bruycker
 */
public class Assert {

    // TODO move to org.kommando.util package
    
    private Assert() {

    }

    public static void argumentNotNull(String argument, Object value) {
        if (value == null) {
            throw new IllegalArgumentException("Argument " + argument + " cannot be null");
        }
    }

    public static void argumentNotEmpty(String argument, String value) {
        if (value == null || value.trim().length() == 0) {
            throw new IllegalArgumentException("Argument " + argument + " cannot be empty");
        }
    }

    public static void isTrue(String message, boolean value) {
        if (!value) {
            throw new IllegalArgumentException(message);
        }
    }

    public static void returnValueNotNull(String method, Object value) {
        if (value == null) {
            throw new IllegalArgumentException("Method " + method + " cannot return null");
        }
    }
}
